Question

8 x + 15 bracket close by that open x + 3 bracket close please give the solution in detail

Answer 1

Your answer is here

$= (8x + 15)(x + 3) \\ \\ = 8x(x + 3) + 15(x + 3) \\ \\ = 8x {}^{2} + 24x + 15x + 45 \\ \\ = 8x {}^{2} + 39x + 45$